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GanttProject vs GanttPRO: catalog facts
GanttProject	GanttPRO
Free Free to use with no subscription; an optional cloud service is also available.	Paid Paid plans with a 14-day free trial of premium features.
Windows, macOS, Linux	Android, iOS, Web
Runs offline with data stored locally Opens Microsoft Project MPX, MPP and XML files	Critical path and dependency support Work breakdown structure planning
Lacks some high-end enterprise features of Microsoft Project Exports to Microsoft Project only in XML/MSPDI format	Premium features require a paid plan after the trial Centred on Gantt planning rather than general task boards
Downloadable app	Downloadable app, Web application, Hosted service
Open source	Closed source
License not stated	License not stated
No account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.